since my car is on the rebuild is a tunnelram too much for me. it will be most likely .60 over got a big cam stock crank new heads. will it be to much

 

If you put a tunnel ram on a 350 it will be a dog engine. You porbably wont make any more power. To make it work you will have to have huge heads, Victor Jr. or more. Plus, to stand the power you will have to have forged pistons.

And btw, you will fail emmisions, make no vacuum, and have to invest in a new carb. Not worth it, and your 350 should make decent power. Add a Performer intake if you want more power.

 

If you're looking to go beyond just a standard carb, look into a dual 4 barrel setup. These are a lot easier to make idle well and have good driveability, then people think, plus you make more power. This will be more beneficial if your motor is a little modded. If you stay reasonable with the carb sizing, it should work alright though. Just an idea. Good luck with however you go.

 

Good idea, but... and there always is a but with these things... no EGR, no emmisions. But if that doesnt matter/apply to you, go with the smallest carbs possible. Your 350 will only need about 650 cfm, so 2 550s could work, but I think that Edelbrock makes them even smaller. Too much carb=no go!

That is such a cool set-up though, I would be jelous if anyone uses it! It would be the perfect sleeper, especially with an 83-83 Z28!:hail:

 

Tunnel rams work best above 5000 rpm. That's where they start to make power. In a street application they offer no low end power.

Unless you have a high stall converter and deep gears you'll overcarb it. Having a tunnel ram with a single carb works even worse.

There's nothing saying it work work or run but you can build more bottom end power with a Victor Junior intake and a single 4 bbl carb.

I don't even see many tunnel rams at the race track (there are a couple). Trying to set up a dual carb system is a nightmare.

 

Here is your set up:



It makes power from 1500-6500, and lots of it, especially in the top end. It isnt that hard to set up but becomes a little tricky if you have a Th-700 R4. It would work really well with a 383, if that is in the cards for you, but a 350 will be fine. Your power band will tend to favor the upper Rpms.

You would have to use 2 of Edelbrocks 500 cfm. That makes 1000 cfm, and that is 400 more than you will need. But 305 were overcarbed by about 250 cfm, so I think that you wont have any trouble with vcuu. You would have the best trottle responce in the business, especiall if paired to some Performer heads. Ported stockers will be fine though, too.

 

But that's not a tunnel ram. Just a dual quad manifold.

JET produced a similar setup for 454's using 2 TBI's. Throw a couple of air cleaners on top and you would never know the difference.

 

is there anyone here that has used a set up like that. the only part i was considering was too much gas for my engine. it will most likely be .060 over and i have a good cam and new strong crank gonna get some roller rockers and the heads will be machined with bigger valves and maybe even ported, i havent decided. but when i am all done with it and the paint i wanna enter some show and i dont have the money for a blower and i think tunnel rams look sweet. so would it be way to much gas? that is my question thanx

 

A tunnel ram is probably not the way you want to go unless it's just for the cool factor. The HUGE plenum area between the carb(s) and runners really kills low RPM fuel distribution, velocity and atomization. That's why it's a pig down low. You have to make all that happen through sheer RPM.

Fuel injection could help that but not much.

That being said please keep in mind I have never installed a tunnel ram on any of my engines so I don't speak from direct experience on that one.

Dual carbs I have played with- even 3 carb setups. None of these setups will surpass a properly selected and tuned single 4bbl intake system. It will look way cooler, however. And be a way bigger headache to install, hook up the linkages and tune.